The GPLv2 license makes it impractical for other software components
licensed under another license to use our device trees. To fix this,
and make our device tree usable by other software components, relicense
them under a GPLv2/X11 dual-license.

In order to get this accepted, we *need* all contributors to the Berlin
device tree files to ack-by the patches applying on a file they
contributed on. A list of needed ack-by by device tree is shown below: